Minecraft has a lot of blocks, but what if they had more? Why do we need them? Please don't just add lists of things!

Dimension Builder Block

There is a Minecraft mod called "RFtools Dimmensions". This mod adds the ability to make custom dimensions with a dimension builder etc... I This should be a feature in Minecraft. This is an extremely useful mod but to not make the game easy, the dimension builder(or what it would be called) should be an end game block and as such, require loot which you would get at the "end game"(aka, very difficult to get loot).